Coffee urn



Patented l1, i928.

lllillllla Tllil P HENRY MARCUSON, F CHCAGO, 11113111015.

COFFEE URN.

Application led February 23, 1928.

My invention. relates to an improvement in cei'tee urns, and has for its object the provision of n'ieans for using stealn to stir up the coii'ee in the collec jar, thus obviating the necessity lor drawing oil seine oi"Y1 the coiiee and repouring it through the top in order to attain the desired strength.

A :further object is to utilize the steain from the hot water urn which is used in connection with the coffee urn to stir the coffee in said urn.

The invention is suitable 'for use with two urn or three urn batteries or combinations ot two urn or three urn batteries. y p

yll`he invention will be best understood by reference to the accompanying drawings which forni a part or" this specilication, and in which,

Figure 1 showsiny invention used with a two urn battery, the hot water urn and coii'ee urn being shown in elevation with a portion ot the outer shell or" the collec urn and of the collec jar broken away to show the interior arrangement.

Figure 2 is a section on the line 2-2 of Figure 1.

ligure 3 is a section on the line 3 3 of i igure 1.

ln the preferred forni of iny invention, as illustrated in the drawings, 5 is the hot water urn used to supply het water 'jor inaling the eotee and for the hot jacket which maintains the collec at aV proper temperature. Illhe hot water l'or making the collec is supplied through the pipe 6, and for filling the hot water jacket, through the by-pass 7, the 'flow ot water through the pipes 6 and C7 being controlled by valves 8 and 8 respectively.

rlhe coliee urn 1 is of the usual 'orin having an outer shell 9 within which is positioned a codec jar 10. Between the coffee jar 10 and the outer shell 9 is a hot water jacket. The bag or strainer 11 for coltee grounds is supported in the upper part oit the coffee jar 10. Above the bag 11 is positionedv a spray head 12 which is supplied with hot water through the pipes 6 and 13 from the hot water u rn 5. The co'li'ee ar 10 is provided with a venty 1li in the bottoni thereof. This vent 14 is connected by means ot a reducing` elbow 15, interiorly screw threaded, and a flange bushing 16, threaded for engagement with said elbow 15, to the pipe 17, which pierces the shell 9 and terminates in a vent 18 through which the Serial No. 256,154.

codec inay be drawn from the jar 10. rlhe vent 18 is closed by the hand operated valve 19 so that the coffee inay be drawn as ref quired.

Above the valve 19 is positioned a codec gauge for indicating the depth of coffee within the jar, which consists oi' a glass tube 2O communica-ting through the valve 19 and the pipe 1'? with the coffee jar 10. Tllhe upper end of the tube 20 is connected with one arm ot a T 21 having a spheroidal hollow body which is supported by a bracket 22, the latter being secured to the urn l by means et a bolt 23 from the inside. of the shell 9. rlhe opposite arm of the T 21 is interiorly threaded and supports a delivery tube 2li of smaller diameter than the glass tube 20, having an enlarged ezrteriorly threaded portion at one end thereof by ineans of which it is secured to the 'l' 21.

The delivery tube 24: extends downwardlyy through the hollow body ofthe "l 21 into the upper endv ot the tube 20. The enlarged portion 25 of the delievery tube 24 extends somewhat beyond the T 21, and to it is secured a pipe 26 by means of suitable fittings, which is connected to a suitable source of steain. ln the preferred forni here illustrated the pipe 26 is connected, by littings and elbows suitable to maintain it at an angle 150, to an aperture 27 especially made therefor in the wall of' the hot water urn 5 above the level of the water therein. ylhe pipe 26 is provided with a valve 28 to control the supply of steam to the codec gauge 20.

rllhe lateral arin ot the "l" 21 is fitted with an elbow 29 the upper end of which is closed by a plug 3() in which is made a small aper ture 31. Surrounding this aperture and extending a short distance above it is a collar 32 of much greater' diameter than the hole 31 and open at the top. rlhe hole 31 provides an opening to equalize the pressure necessary for the proper functioning ot the codec gauge 20.

ln use ground collec is placed in the bag 11 and hot water sprayed over it from the ot water urn 5 by operation of the valve which pereolates through the Co'iee rounds and runs into the coffee jar 10. l-lot water is also supplied to lill the jacket by the operation et the valve 8. As the liquid in the collec jar 10 rises, it fills the tube 20 also to an equal depth, the air in the tube escaping through the aperture 31. The

coffee jar is filled until the height of liquid in the tube :2O indicates that the jar 10 has been filled as required. `When it is desired to stir up the coffee to equalize the strength thereof, or to increase the strength by again percolating it through the bag l1, the valve 28 is opened allowing steam to pass from the upper part of the hot Water urn through the pipe 2G and the delivery tube 2a into the tube 20, thereby forcing the coffee in the tube 2O back through the valve i9, pipe 17 and vent le into the coee jar l0 Where the steam causes the coffee contained therein to swirl around, thereby mixing` it and causes it to percolate again through the bag; ll. Some of the steam Will escape through the aperture 3l, and for this reason the collar is provided, it being of sufcient height to cause the condensation of any steam which does escape, thereby preventing the Water so produced from' drippingl down and marring or soilingthe urn or the stand on which it rests.

It is obvious that my invention might be applied so as to utilize any other convenient source of steam than the steam in the upper part of the hot Water urn. 5, or any source of pressure, as compressed air, equally Well.

While l have illustrated and described the preferred form of construction for carrying` my invention into effect, this is capable of variation and modification Without departing` from the spirit of the invention. I, therefore, do not .vish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modification as lie within the scope of the appended claims.

What l claim as new and desire t0 secure by Letters Patent is:

l. In combination with a coffee urn having an exterior coffee gauge, a T having the lower arm connected to the upper end of said gauge, the upper arm connected to a source of steam or other pressure exterior to said coffee urn; the third arm connected to an upturned pressure vent Aravine coiiar surrounding; said vent and amending` thereabove; and a delivery tube positioned in the upper arn'r of said T and efnendinp; therethrough into the upper end of said coffee gauge, substantially as c escribed.

2. .in combination with a coffee urn having,` an exterior coffee gauge and adapted for use with a separate hot Water 1 i, a "t" having; the lower arin connected to said conce gauge; the upper arm thereof connected to the upper part of said hot Water urni Yd provided vutn valve; the T connected to an upturned pressure vent having` a collar surroundi; and extending above the sanig and a delii ry tube positioned in the upper arm of said and extending therethrou,g` into tho upper end of said coffee gauge, substantially as described.

3. in combination with a glass vc I e top' thereof, of a collar around said vent adapted to prevent. moisture condesed from escaping steam' from soiling said gauge, substantially as described.

e, in combination. with a coffee urn having;` an exterior coffee gauge and adapted for use with a seil arate hot Water urn, means for connecting the steam from said hot vater urn to the top of said oaup'e including` a T With a steam dei-ivery tube passing` therethrough, and a vent surrounded by a collar adapted to prevent moisture condensed from escaping` steam from soiling said gauge, substantially as described.

ln testimony whereof l have signed my name to this specification.

HENRY MARCUSUN. 

